TW563099B - Method of arranging divided recording area segments of recording medium in broadcast receiving system - Google Patents

Abstract

A method of arranging divided recording area segments of a recording medium in a broadcast receiving system having a random access storage device. In the method, a circular buffer area is disposed in a first predetermined position of the recording medium, for recording a first broadcast signal in real time while reproducing a previously recorded first broadcast signal, a video file area is disposed in a second predetermined position of the recording medium, for recording a second broadcast signal in a logical file at a predetermined time, and a control information area is disposed in a third predetermined position of the recording medium, for recording information about recorded files.

Description

563099 V. Description of the invention (1) The patent application in this case takes precedence over the 99th application of the Korean Industrial Property Office, entitled "Method of Arranging Divided Recording Area Segments of Recording Medium in Broadcast", dated July 28, 1998. Case No. -30938, which has been incorporated into this case by reference. The present invention relates to a broadcast receiving system capable of supporting delayed viewing of a broadcast program and recording / reproducing the program at the same time, and in particular to a partitioned recording area of a recording medium that allows delayed viewing of a program while recording / copying a broadcast program. Paragraph method. A hard disk drive (HDD) is randomly readable in a computer system. Compared with other auxiliary memories, the hard disk drive has the advantages of low cost and large capacity, and high transmission efficiency, which makes it a random access device for a broadcast receiving system. System I — A broadcast receiving system with a random access device can record / replicate the broadcast video stream at the same time. This can be achieved by controlling the input / output of a video stream on a hard disk drive. The following will explain a method that can simultaneously support time-lapse viewing and recording / copying video. Zen #: A method for arranging video streaming in a receiving system—on the surface as a recording medium. A picture is shown as a circular temporary hard disk in a time-lapse viewing broadcasting system. The second image of the hard disk is shown-discontinuously recording a plurality of video streams & i-the case where the hard disk is used as a circular register, ...; in the fixed-size block shown in the first image. The video stream system write point W and a read

563099 V. Description of the invention (2) Picking point R is set to-Shi Zhengshi Agglomeration & After recording, clockwise from the writing point to Yun Qin. A read-write head will take a circular shape from the new video stream: the member will move ′ and replay the predetermined video stream by randomly reading a 0-shaped device at a specific time. Yiyi] shocked the face: In order to arrange the video stream discontinuously as shown in the second picture, the scholarship discipline Xu Yuji Γ separated a hard disk surface with a fixed size block and the video: Department,., Recorded in Including multiple blocks of video audits. &, because the deleted video file will cause discontinuous idle blocks so that the block is not a /, another arrangement. Information about each video file (title, time), and information about the location of the blocks in each video file are recorded in a control information area. The first diagram is a program for recording input / output matters for a hard disk drive for real-time recording / copying of a plurality of video streams. The figure uses a C-LOOK algorithm to process three video streams as an example. c — The L〇〇K algorithm is similar to the one disclosed in Reddy A · L · N · and Wyllie J · C. Published in IEEE Computer, Vol. 27, No. 3, ρρ · 67 in March 1994 -74, "1 / 〇Issues in a Multimedia System", Ralf Steinmetz, "Multimedia File Systems", Computer Communications, Vol. 18, No. 3, ρρ · 133-134, March 1995

Survey: Approachs for Continuous Media Disk

Scheduling "iSCAN-Earlist-Deadline-First (SCAN-EDF) solution and a gate operation disclosed in US Patent No. 5,754,882. Therefore, the related description will be omitted here. Referring to the third figure, video streams # 1 and # 2 are being played back and video stream # 3 is being recorded. In most processing methods, a hard drive input / output control

563099 V. Description of the invention (3) The system is to flow at every predetermined period T. For example, if the cycle is related to processing video streams # 1 and # 2 in each cycle, then read 1 at 3 * with the corresponding sharp point on the surface of the hard disk). For continuous helmets, soil, and viewport holes, the blocks that are periodically replayed should be / after the current period. In the next word, they should be generated in the current period and read by the hard disk drive. Opportunity for records. -Process the video stream in the cycle 2. Month: Transfer to the hard disk Μ 妒 古 安 而 —r r a, the sequence is based on an input / output issue. In the C-L00K algorithm, the virtual scene is combined with the movement direction of the head. Dummy ;: Video: The sequence of the stream is matched with the track movement to-the innermost track and the video stream blocks # 1, # 2 and # 3 are two ^ located on track # 1G, 10 () and 6 〇, the video stream # 1, 3 and 2 will be read in the sequence shown in the third figure at ^. The broadcast receiving system using the hard disk area as a circular register as shown in the first figure can copy a previously recorded video stream with a time delay when recording a video stream. However, it cannot record and copy multiple video streams at the same time. In addition, video streams cannot be formed in the video archive unit and video files cannot be arbitrarily deleted. ~ Μ On the other hand, since a broadcast receiving system with a discontinuous schedule as shown in the second figure can freely use hard disk space, the recorded video stream can be stored in a video file. However, because blocks cannot be automatically reused in a limited area like a circular register, the temporary storage management of delayed viewing is not easy. This is because the idle blocks are scattered. The reason is that an object of the present invention is to provide a method capable of overcoming the traditional use of a broadcast section that can simultaneously support delayed viewing and recording / reproducing.

563099

The problem of the recording area of one of the recording media in the broadcast receiving system. Another object of the present invention is to provide a method for efficiently managing separate recording sections of a recording medium to simultaneously provide delayed viewing and recording / copying of multiple video streams in a broadcast receiving system. Yet another object of the present invention is to provide a method which can efficiently manage separate recording sections of a recording medium to simultaneously provide delayed viewing and high-speed recording / copying of multiple video streams in a broadcast receiving system.

These and other objects of the invention can be achieved by providing a method for arranging separate recording sections of a recording medium in a broadcast receiving system having a random access device. In this method, a circular register area is set in a predetermined position of a recording medium to copy a previously recorded first broadcast signal, that is, $, a recorded first broadcast signal, and a video broadcast area. It is set in the recording medium j t = fixed position to record a second broadcast signal in one at a predetermined time, the coffin case, and a control information area is set in one of the third predetermined positions of the recording medium to record the presence of Information about log files. The above and other objects, features, and advantages of the present invention will be more apparent by the following detailed description not shown in the accompanying drawings, among which:

The first picture is a hard disk used as a circular register for delayed viewing in a broadcast receiving system. The first picture is a hard disk that discontinuously arranges multiple video streams; basin = ._ Figure 2 is a block diagram of a hard disk drive for real-time recording and copying of multiple video streams; Figure 3 is a block diagram of a broadcasting system that can support delayed viewing and recording / copying of a broadcast program according to a specific embodiment of the invention;

Page 8 563099 V. Description of the invention (6)

And an expander to expand the hard drive. The extended 1 394 interface. The x-series show uses the IEEE Z video stream response unit 5G to restore the video stream received from the random access device shuffle ^ system bus to the original signal and output the signal of θ 1 to a television (TV) receiver 9 0. ^ Machine storage =: read-only memory ⑽) is used to control the control process and access memory for random access control 30 and the broadcast signal receiver 10) 暂时 is temporarily stored-Yu Sheng is extravagant during the control operation A controller 60 has a plurality of adjustment keys for the control system, data generated by the controller, and data input into the controller. The adjustment keys are "pause", "turn", "quick search", etc. A computer interface 70 is connected between the broadcast receiving system of the embodiment of the present invention and the electric monthly packet-transmitting / receiving signals. A timer does not generate the daytime interval> Λ enables the broadcast receiving system to automatically record a program. The fifth figure shows a hard disk recording area according to a specific embodiment of the present invention. Here, the recording area is divided into four sections. The hard disk recording area covers the area from the outermost magnetic track (track # 0) to the innermost magnetic track (track # η). The hard disk recording area is divided into video file areas # 1 and # 2, 10A and 丨 0B, a control information area 120, a circular register area 13 for delayed viewing, and a general file area 1 40 and up. Efficiently delay watching and recording / copying a broadcast program simultaneously. The Bayi circular register area 130 is used to record a broadcast signal being broadcast and to copy a previously recorded broadcast signal in real time. Circular register 丨 3〇 page 10 563099

j is located anywhere in the hard disk recording area and preferably includes a magnetic clamp on both sides of η to execute the search time of a read / write head ", watching and recording / copying the broadcast signal of a specific channel and cutting Do not have women ’s volleyball on the outermost magnetic track and the innermost magnetic track = 12 T ° B is used to record a wide range of appointment time ^ discontinuous logical files, as shown in the second picture. The discontinuous arrangement method is used to manage the general file area 14 to store information similar to the video stream except for Bezien. ', The control information area 1 20 stores information such as the title and time information related to each video file And other information and the location of the blocks in each file. A sixth picture shows the video stream recorded and stored in the hard disk record area separated according to the specific embodiment of the present invention. Here, the four blocks are arranged in In its respective areas. The seventh picture is a C-LOOK algorithm to process the video stream shown in the sixth picture. 'The ✓, picture, video stream # 1 2 2 0 is being recorded in Circular register 1 300 to provide time-lapse viewing. Video Stream # 2 210 Industry Record and provide time-lapse viewing. Video stream # 3 2 3 0 is being recorded in video file area # 2 11 〇b and has nothing to do with a program currently being broadcast. Video stream # 4 is recorded in video file area # 1 110A If the delayed viewing and copying are selected at the same time, the video stream is read or recorded in the order of decreasing the track number one by one in the C-LOOK algorithm. Thus, the video stream input / output processing sequence of a hard drive is 4, 2, 1 and 3. Therefore, 220 and 230 of video streams # 1 and # 3 are inputted to the dual-port random storage.

563099

Page 13

Claims (1)

563099 6. The scope of the patent application is to set up a first video file area and a second video file area on a peripheral part and an inner part of a hard disk recorder surface to record a second broadcast signal at a predetermined time. In the logical file; setting a general file area on the boundary of the circular register area to manage information similar to video information except continuous data; and setting a control information area in the circular register area and the video file area Between the records there is information about the record file. 8. The method according to item 7 of the patent application scope, wherein the circular register area is symmetrical with respect to a central magnetic track of a recording surface of the hard disk drive. Page 16